- Rajesh Gurunathan is a network security professional with over 5 years of experience seeking a challenging position. - He has extensive experience providing network and security operations support across various industries. - He is proficient in networking technologies like Cisco, Juniper, and Checkpoint and security tools like ArcSight and QRadar.

1. Rajesh Gurunathan
Mobile: +91 8056181219 Email: rajesh.guru21@gmail.com
Professional Summary
Highly motivated quick learner, team player and success oriented professional seeking a challenging
position to contribute my skills and knowledge in the advanced technologies of Networking, Network
Security & Information Security in a dynamic and performance oriented organization.
Having 5.2 Years of extensive professional experience in Networking and Network Security providing
operations and project support for the customers across Retail, Banking, Finance and Insurance sectors.
Strong understanding in ITIL service delivery standards, problem management, change management and
customer support. Excellent problem analysis and troubleshooting skills. Proven strengths in effective
work-flow management and team work. Internal training and process consultancy are supplementary skill
sets to my profile.
IT Qualifications
● Cisco Certified Network Associate (CCNA)
● Cisco Building Cisco Multilayer Switched Networks (CCNP-Switching)
● Cisco Certified Network Professional (CCNP – Route)
● Juniper Networks Certified Internet Specialist (JNCIS-FWV)
● Check Point Certified Security Administrator (CCSA)
● Arc sight Certified Security Analysist HP0-M54 (ACSA)
● Preparing for Q_ Radar SIEM.
Technical Skills
Networking Hardware
Routers: Cisco 2600/2800/3500
Switches: Cisco 6509/6506/6504/4506/3750, Nexus 5K (5010), 2K Series
Firewalls: Checkpoint, Juniper firewall SSG550M, Cisco ASA 5510/5520,
Fortinet 100D
Wireless: Cisco Controller 5500, Access point (Cisco Air LAP1142N)
Authentication: Cisco Secure ACS.
Security Analysis: Arc sight r71, Q_ Radar
Security
VPNs (Site-to-Site, IPsec, Remote Access),Access Lists, Cisco VPN Concentrator, Cisco PIX / ASA Firewalls,
Cisco VPN Client, Juniper Netscreen Firewalls, Checkpoint R75, Arcsight ESM, Arcsight Logger, Arcsight
FlexConnectors, Monitoring and analysing Event logs
Routing
Static Routing, RIPv1, RIPv2, IGRP, EIGRP, OSPF, BGP, Policy Based Routing PBR, Route Filtering,
Redistribution, Summarization

2. Switching & Bridging
Catalyst CatOS and IOS based Switches, VTP, STP, MST, RSTP+, Trunking, VLANs, Layer 3 Switches, and
Logical Ether Channels. Nexus FEX, Port profile , Nexus VDC and VPC
LAN
Media: Ethernet, Fast Ethernet, Gigabit Ethernet.
Network Analyzers: Ethereal and Wireshark
Various Features & Services
IOS and CatOS Features, HSRP, BLGP, NAT, SNMP, SYSLOG, NTP, DHCP, CDP, DNS, HTTP, TFTP and FTP
Management.
Network Monitoring and Management Systems
HP-Open view, Netflow analyser, MRTG, PRTG, Kiwi syslog and Cattools (for backup)
Work Experience
Technical Associate – Network Security and Arcsight Analyst (Apr ‘22nd 2013 – Present)
3i_Infotech Ltd, Chennai.
● Managing corporate and customer firewalls such as Juniper, Checkpoint & Fortinet firewalls,
● Managing the Cisco layer 2 stack switches (3750 & 2960) and the core Nexus switches..
● Monitoring the WAN, LAN and Communication devices through Manage engine, syslog, HP NNM
and PRTG. Coordinating with Vendors or ISPs in case of issues on the WAN pipes.
● Involved in troubleshooting issues on the communication devices and making firewall changes to
provide access to the DMZ servers on demand basis through the ticketing system.
● Logging Change request for significant changes in the network domain and getting approval
through Change Advisory Board to implement them.
● Installing and troubleshooting Router, Firewall based Site-to-Site VPN and switch stacks on the
DMZ environments
● Have been involved in various projects from the designing and planning phase and implementing
them as planned on the scheduled window such as Firewall & switch upgrades and implementing
Nexus VDC on the production network.
● Configuring and updating the IPS signature, DOS profile, application & file filtering profile, UTM
profiles.
● Documentation: Visio diagrams (low and high levels), CMDB updates. To name some – Master
Inventory spreadsheet and Firewall request form etc.
● Representing changes for the execution of the firewalls and switches upgrades as a part of
refresh project. Successfully upgraded the ScreenOS on the Juniper SSG550M and IOS images
to the recommended newer version on the Cisco Switches.
● Monitor security events using the Arc Sight Console and Web Console.
● Actions against correlated events such as notifying stakeholders, case creation, automatic
security incident logging in the internal ticketing system, graphical analysis and remediation.
● Build or use standard content to correlate, view and respond to security incidents.
● Involved in deployment and maintaining the Arc Sight network model to accurately build content,
view and report on security incidents.
● Content development, which includes Filters, Rules, Data Monitors, Active Channels, Active list,
Session list, Trends, Reports etc..

3. Network Engineer – Networks & Security (Aug ’01st 2012 – Apr ’20th 2013)
Adecco Private Ltd.,(Tata Communication Limited) Chennai.
● Deputed for a Multinational IT firm (Tata Communication Limited) located in Chennai
● A Change Management Team resource based out of TCL’s Global Service Delivery Center
providing Networks & Security services to a well reputed Client based firm .
● Key ownership of Remote Access solution and Cisco/Check Point Firewalls. Ownership of the
onsite and offshore Disaster Recovery tests.
● Managing and maintaining Check Point, Nokia and Cisco ASA Firewalls for security rules, VPNs
by following ITIL processes like service requests and change management while adhering to the
SLAs.
● Liaising with Information Security team for 3rd party VPN set-ups, approvals, configuration
changes to meet business needs aligning with the Company Security Policies.
● Played a key role in the firewall upgrades. Successfully upgraded the Checkpoint images to
recommended newer versions with upgrade to Check Point R76 with latest HFA.
● Successful migration of business critical web servers to a separate DMZ for PCI compliance.
● Vendor coordination in support of various security products viz. Check Point, Fortinet,
WAN/MPLS for service issues, maintenance activities and upgrades etc.
● Also responsible for assorted Networks tasks viz. Network monitoring and checks, Routing
changes, Switch installations, ACL configurations etc. .
● Providing on-call support and standby cover for incidents/changes/maintenance activities
affecting IT and business services.
Network Engineer –(Network Operations Center) Care IT Solutions (Mar ‘08th 2011 – Jul ‘28th 2012)
(Information Technology and Services industry)
● Deputed for a Multinational IT firm (Wipro Technologies – http://www.wipro.com) located in
Chennai.
● Being a part of Network Operation Center, managing around 246 Client networks at 7 various
locations in Chennai and other regions in all over India
● Clients WAN link bandwidth management and monitoring.
● Identifying LAN and WAN faults and getting them resolved. Coordinating with respective ISPs,
vendors for any vendor related issues/problems.
● Working in Tickets raised by the users.
● Installing and troubleshooting Router, Pix based Site-Site VPN and Remote Access VPN (C2S).
● Managing VPN concentrators for the Offshore Development Centers.
● Implementation of New Projects in co-ordination with the internal and onsite team.
● Co-ordination with Global Team in case of critical Network Outages.
● Providing regular updates and feedbacks on NOC operations.
● Tracking the Customer end device Changes.
● Vendor management in terms of coordinating with Vendor for the WAN/MPLS circuit, hardware
issues and making sure to maintain high availability on the services
● Recommended various change managements proactively to enhance the network performance
for the customers thereby gaining further knowledge on Change request.

4. Service Engineer – Perfect Computer Services (Jul‘10th 2010 – Mar ‘07th 2011))
(Hardware & Software Support and Services Industry)
● Assembling and installing all types of PC’s with any configuration.
● Installing Operating systems and establishing Network (LAN) setup to connecting under
workgroup or DNS and providing WAN settings.
● Involved in various stages of troubleshooting in systems, LAN and Hardware problems including
all types of printers.
● Handling Antivirus Software’s such as Norton Antivirus, AVG Edition, MacAfee
● Configuring Windows backup and enabling fragmentation for the better usage of storage devices.
● Job including domestic client support in terms of installing, servicing and maintaining the assets
which covers under contact
● Deploying and managing additional Domain Controllers and promoting as an AD server for the
designated Domain and enabling Database servers for the accounts software (Tally)
Education
● B.E., in Electronics & communication Engineering (2006-2010), Mount Zion College of Engineering &
Technology, Pudukkottai with 66 % aggregate.
● HSC in A.P. Govt. Hr. Sec. School (2006), Tamil Nadu State board with 67.3% aggregate.
● SSLC in A.P. Govt. Hr. Sec. School (2004), Tamil Nadu State board with 87.8% aggregate
Personal Strengths
● Ability and willingness to learn things with positive frame of mind and apply them in the interest of
the team/department.
● Hardworking, flexible and a passionate team player.
● Prepared to give more than 100% every single time
● Excellent customer handling and vendor coordination skills.
Personal Details:
● Gender : Male
● Father Name : Gurunathan A
● Date of Birth : 08_06_1989
● Age : 26 Years
● Nationality : Indian
● Languages : English and Tamil
● Marital Status : Single
Declaration:
I affirm that all the information given above is true to my knowledge and I’ll do my best.
Date:
Place: Chennai (Rajesh Gurunathan)